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  1. 19682

    While I applaud the work that is looking at the biochemical correlates of aggressive and delinquent behavior, it is important to emphasize that environmental factors still predominate when we are searching for the roots of violence. Although there is no single factor underlying aggressive behavior in children, my own 30-plus years looking into the relationship […]

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  2. Violent Developments

    New research has identified a spectrum of interacting elements that contribute to impulsive violence in young people.

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  3. Math

    Möbius at the Shopping Mall

    Möbius strips can show up in the unlikeliest places.

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  4. Math

    Pentomino Sudoku

    A contest features a combination of sudoku and tiles called pentominoes.